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A023541
Convolution of natural numbers with Beatty sequence for the golden mean A000201.
0
1, 5, 13, 27, 49, 80, 122, 176, 244, 328, 429, 549, 690, 853, 1040, 1252, 1491, 1759, 2057, 2387, 2750, 3148, 3583, 4056, 4569, 5124, 5722, 6365, 7054, 7791, 8578, 9416, 10307, 11253, 12255, 13315, 14434, 15614, 16857, 18164, 19537, 20977, 22486, 24066, 25718, 27444, 29246
OFFSET
1,2
PROG
(PARI) b(n) = floor(n*(sqrt(5)+1)/2); \\ A000201
a(n) = sum(k=1, n, k*b(n-k+1)); \\ Michel Marcus, Jun 06 2019
CROSSREFS
Cf. A000201.
Sequence in context: A025193 A002717 A299897 * A079989 A062480 A027024
KEYWORD
nonn
EXTENSIONS
Missing a(16) inserted by Sean A. Irvine, Jun 06 2019
More terms from Michel Marcus, Jun 06 2019
STATUS
approved