A178884 - OEIS

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A178884

a(n) = number of 9-digit primes with digit sum n, where n runs through the non-multiples of 3 in the range [2..80].

0, 2, 26, 226, 372, 1457, 3312, 9159, 13320, 32077, 50752, 102027, 138554, 249053, 331920, 535444, 655423, 966278, 1152057, 1546854, 1751100, 2168566, 2374001, 2719026, 2850784, 3029814, 3063907, 3019100, 2943918, 2691740, 2519884, 2134422, 1930862, 1511648, 1303187, 935353, 783315, 514221, 402227, 238252, 182466, 97415, 66012, 30140, 21162, 8438, 4350, 1311, 906, 170, 65, 3, 1

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..53.

BigPrimes.net, Digit sums of primes

EXAMPLE

Digit-sums of 9-digit primes

Sum count

2 0

4 2

5 26

7 226

8 372

10 1457

11 3312

13 9159

14 13320

16 32077

17 50752

19 102027

20 138554

22 249053

23 331920

25 535444

26 655423

28 966278

29 1152057

31 1546854

32 1751100

34 2168566

...

CROSSREFS

For 2- through 9-digit primes the counts are in A177868, A178183, A178447, A178571, A178605, A178876, A178879, A178884.

Sequence in context: A072415 A197468 A184354 * A211319 A121768 A280556

Adjacent sequences: A178881 A178882 A178883 * A178885 A178886 A178887

KEYWORD

nonn,base,fini,full

AUTHOR

N. J. A. Sloane, Dec 28 2010

STATUS

approved