A135766 Multiply sequence A007775 (1 7 11 13 ...) by sequence A000351 (1 5 25 125 ...).

1, 7, 5, 11, 35, 25, 13, 55, 175, 125, 17, 65, 275, 875, 625, 19, 85, 325, 1375, 4375, 3125, 23, 95, 425, 1625, 6875, 21875, 15625, 29, 115, 475, 2125, 8125, 34375, 109375, 78125, 31, 145, 575, 2375, 10625, 40625, 171875, 546875, 390625, 37, 155, 725, 2875

Offset

1,2

Links

Table of n, a(n) for n=1..49.

Formula

T(n,k) = A007775(n-k)*A000351(k), n>0, 0<=k<n. - R. J. Mathar, Jan 07 2008

Example

A(13) = 275 since A007775(3) * A000351(3) = 11 times 25.

Crossrefs

Cf. A135764, A135765, A007775 (not divisible by 2, 3, or 5), A000351 (powers of five).

Sequence in context: A247870 A367689 A141391 * A067745 A369797 A070408

Adjacent sequences: A135763 A135764 A135765 * A135767 A135768 A135769

Keyword

easy,nonn,tabl

Author

Alford Arnold, Nov 29 2007

Extensions

More terms from R. J. Mathar, Jan 07 2008

Status

approved