A108063 Triangle, read by rows, where T(n,k) = A006498(n+1) - A106408(n,k). A006498 are the central numbers of A106408.

0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, -1, 0, -1, 1, 2, -1, 0, 0, -1, 2, 4, -1, 1, 0, 1, -1, 4, 6, -2, 1, 0, 0, 1, -2, 6, 9, -4, 1, -1, 0, -1, 1, -4, 9, 15, -6, 2, -1, 0, 0, -1, 2, -6, 15, 25, -9, 4, -1, 1, 0, 1, -1, 4, -9, 25, 40, -15, 6, -2, 1, 0, 0, 1, -2, 6, -15, 40, 64, -25, 9, -4, 1, -1, 0, -1, 1, -4, 9, -25, 64, 104, -40, 15, -6, 2, -1, 0, 0, -1, 2, -6

Offset

1,16

Comments

Each entry is +- an entry in A006498. Each column and each diagonal contains either A006498 or -A006498. For n>2, each row contains an alternating-signed version of a subsequence of A006498, both in forward and reverse order. For n>2 each column contains an alternating-signed version of a contiguous subsequence of A006498 in reverse order.

Links

Table of n, a(n) for n=1..102.

Crossrefs

Cf. A006498, A106408.

Sequence in context: A236263 A337126 A319572 * A164846 A363928 A331385

Adjacent sequences: A108060 A108061 A108062 * A108064 A108065 A108066

Keyword

sign,tabl

Author

Gerald McGarvey, Jun 02 2005

Status

approved