A155901 Arise in p-adic valuations of sequences counting alternating sign matrices.

2, 8, 5, 12, 5, 14, 8, 14

Offset: 1

Author

Jonathan Vos Post, Jan 30 2009

Keywords

• more
• nonn

Comments

These are the values from Table 1 p.14 of Sun and Moll.

Examples

			a(7) = 8 because "the eight solutions to Nu(T(n)) = 7 are 26, 38, 46, 82, 5462, 10922, 10924 and J_15 - 1 = 21844" where J_k = k-th Jacobsthal number = A001045(k).
		

References

• D. Bressoud, Proofs and Confirmations: the story of the Alternating Sign Matrix Conjecture, Cambridge University Press, 1999.

Links

• D. Bressoud and J. Propp, How the Alternating Sign Matrix Conjecture was solved, Notices Amer. Math. Soc., 46:637-646, 1999.
• Xinyu Sun and Victor H. Moll, The p-adic valuations of sequences counting alternating sign matrices, arXiv:0901.4564 [math.NT], 2009.

Crossrefs

Cf. A000219, A001045, A005130, A048601, A128445, A143670.