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A326721
Irregular array related to the Euler numbers, read by rows, T_row(n) = A326722_row(2*n) + A326722_row(2*n+1) for n >= 0, T_row(-1) = [1].
2
1, -1, 1, 1, 2, -1, -4, 1, 2, -16, 5, 48, -10, -48, 5, 16, 272, -61, -1088, 183, 1632, -183, -1088, 61, 272, -7936, 1385, 39680, -5540, -79360, 8310, 79360, -5540, -39680, 1385, 7936
OFFSET
-1,5
EXAMPLE
Triangle starts:
[-1] 1;
[0] -1, 1, 1;
[1] 2, -1, -4, 1, 2;
[2] -16, 5, 48, -10, -48, 5, 16;
[3] 272, -61, -1088, 183, 1632, -183, -1088, 61, 272;
[4] -7936, 1385, 39680, -5540, -79360, 8310, 79360, -5540, -39680, 1385, 7936;
MAPLE
print([1]); for n from 0 to 6 do
print([op(A326722_row(2*n)), 0] + A326722_row(2*n+1)) od:
CROSSREFS
Central column is in A326720.
Sequence in context: A224065 A077904 A088964 * A243792 A124331 A242885
KEYWORD
sign,tabf
AUTHOR
Peter Luschny, Aug 08 2019
STATUS
approved