A339577 a(n) = product of nonzero entries in row n of A235791.

1, 2, 3, 4, 10, 12, 21, 24, 72, 80, 110, 180, 234, 504, 840, 896, 1088, 2160, 2565, 5400, 7560, 10560, 12144, 14784, 25200, 32760, 84240, 87360, 97440, 181440, 200880, 207360, 380160, 456960, 1249500, 1413720, 1538460, 1805760, 2845440, 3502080, 3778560, 7076160, 7606872, 15567552

Offset

1,2

Links

Table of n, a(n) for n=1..44.

Maple

a:= n-> mul(ceil((n+1)/k-(k+1)/2), k=1..floor((sqrt(8*n+1)-1)/2)):
seq(a(n), n=1..60);

Crossrefs

Cf. A235791, A060831, A024916, A237593.

Sequence in context: A196007 A134170 A276560 * A049548 A005456 A100773

Adjacent sequences: A339574 A339575 A339576 * A339578 A339579 A339580

Keyword

nonn

Author

N. J. A. Sloane, Dec 19 2020

Status

approved