A024923 Partial products of the sequence of prime powers (A000961).

1, 2, 6, 24, 120, 840, 6720, 60480, 665280, 8648640, 138378240, 2352430080, 44696171520, 1028011944960, 25700298624000, 693908062848000, 20123333822592000, 623823348500352000, 19962347152011264000, 738606844624416768000, 30282880629601087488000, 1302163867072846761984000

Offset

1,2

Links

Table of n, a(n) for n=1..22.

Prog

(PARI) ispp1(n) = isprimepower(n) || (n==1); \\ A000961
lista(nn) = {my(s=1); for (n=1, nn, if (ispp1(n), s*= n; print1(s, ", ")); ); } \\ Michel Marcus, Mar 26 2020

Crossrefs

Cf. A000961, A024918.

Sequence in context: A351984 A365977 A079854 * A334395 A347064 A037992

Adjacent sequences: A024920 A024921 A024922 * A024924 A024925 A024926

Keyword

nonn

Author

Den Roussel (DenRoussel(AT)webtv.net)

Extensions

Offset 1 and more terms from Michel Marcus, Mar 26 2020

Status

approved