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A328462
Numbers obtained by reinterpreting base-2 representation of odd numbers in primorial base.
5
1, 3, 7, 9, 31, 33, 37, 39, 211, 213, 217, 219, 241, 243, 247, 249, 2311, 2313, 2317, 2319, 2341, 2343, 2347, 2349, 2521, 2523, 2527, 2529, 2551, 2553, 2557, 2559, 30031, 30033, 30037, 30039, 30061, 30063, 30067, 30069, 30241, 30243, 30247, 30249, 30271, 30273, 30277, 30279, 32341, 32343, 32347, 32349, 32371, 32373
OFFSET
1,2
PROG
(PARI)
A276156(n) = { my(p=2, pr=1, s=0); while(n, if(n%2, s += pr); n >>= 1; pr *= p; p = nextprime(1+p)); (s); };
A328462(n) = A276156(n+n-1);
CROSSREFS
Row 1 of A328464, odd bisection of A276156 and of A328461.
Cf. A143293 (subsequence).
Sequence in context: A339614 A246659 A072087 * A376337 A328233 A031161
KEYWORD
nonn,base
AUTHOR
Antti Karttunen, Oct 16 2019
STATUS
approved