A159411 Number of n X n arrays of squares of integers summing to 23.

12, 10656, 6262080, 4583049300, 3172546876500, 1799561912439312, 747208691021333376, 207556530641358183360, 36509426066350663265700, 4057698689067050461472940, 296245251637717304580959808, 14987935907592332503472128488, 553418104530158445362464783740

Offset

2,1

Comments

All such sequences have holonomic recurrences (cf. comment in A159359). - Georg Fischer, Feb 17 2022

Links

R. H. Hardin, Table of n, a(n) for n = 2..100

Vaclav Kotesovec, G.f. for A159411

Index entries for linear recurrences with constant coefficients, signature (47, -1081, 16215, -178365, 1533939, -10737573, 62891499, -314457495, 1362649145, -5178066751, 17417133617, -52251400851, 140676848445, -341643774795, 751616304549, -1503232609098, 2741188875414, -4568648125690, 6973199770790, -9762479679106, 12551759587422, -14833897694226, 16123801841550, -16123801841550, 14833897694226, -12551759587422, 9762479679106, -6973199770790, 4568648125690, -2741188875414, 1503232609098, -751616304549, 341643774795, -140676848445, 52251400851, -17417133617, 5178066751, -1362649145, 314457495, -62891499, 10737573, -1533939, 178365, -16215, 1081, -47, 1).

Formula

G.f.: see link above. - Vaclav Kotesovec, Dec 04 2012

Crossrefs

Sequence in context: A346717 A012732 A001322 * A074983 A159413 A317958

Adjacent sequences: A159408 A159409 A159410 * A159412 A159413 A159414

Keyword

nonn

Author

R. H. Hardin, Apr 11 2009

Status

approved