A256972 Triangle read by rows: row n gives coefficients of polynomial chi_n(1,1,q), n >= 0.

1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 2, 3, 3, 2, 2, 1, 1, 2, 3, 3, 3, 3, 2, 1, 1, 1, 1, 2, 3, 3, 5, 7, 6, 7, 5, 4, 2, 2, 1, 1, 2, 3, 3, 5, 7, 7, 8, 7, 7, 5, 5, 3, 2, 1, 1

Offset

0,6

References

Agarwal, Ashok K.; Andrews, George E. On Asai's polynomials related to the twisting operators of finite classical groups. J. Ramanujan Math. Soc. 1 (1986), no. 1-2, 16--45. MR0945600 (89m:20051). See Table E-1.

Links

Table of n, a(n) for n=0..57.

Example

Triangle begins:
1,
1,1,
1,1,2,
1,1,2,1,1,
1,1,2,3,3,2,2,
1,1,2,3,3,3,3,2,1,1,
1,1,2,3,3,5,7,6,7,5,4,2,2,
1,1,2,3,3,5,7,7,8,7,7,5,5,3,2,1,1,
...

Crossrefs

Sequence in context: A306261 A329722 A025430 * A365708 A352999 A280747

Adjacent sequences: A256969 A256970 A256971 * A256973 A256974 A256975

Keyword

nonn,tabl,more

Author

N. J. A. Sloane, Apr 19 2015

Extensions

The irregular triangle in Table E-2 should also be added to the OEIS.

Status

approved