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 A236282 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with 2X2 subblock sum of squares lexicographically nondecreasing rowwise and columnwise 4
 81, 432, 432, 2304, 5805, 2304, 9504, 87450, 87450, 9504, 39204, 901317, 4297035, 901317, 39204, 138402, 9293996, 134940646, 134940646, 9293996, 138402, 488601, 73777097, 4211459815, 13055877546, 4211459815, 73777097, 488601, 1553877 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......81.........432...........2304.............9504.............39204 ......432........5805..........87450...........901317...........9293996 .....2304.......87450........4297035........134940646........4211459815 .....9504......901317......134940646......13055877546.....1257559565027 ....39204.....9293996.....4211459815....1257559565027...374969850504444 ...138402....73777097....95929739101...86958471603770.79511653034814238 ...488601...583531732..2162880693927.5933159964415314 ..1553877..3814287681.38763321249354 ..4941729.24858329516 .14587326 LINKS R. H. Hardin, Table of n, a(n) for n = 1..60 FORMULA Empirical for column k: k=1: [linear recurrence of order 26] EXAMPLE Some solutions for n=2 k=4 ..0..2..2..0..2....1..2..0..0..2....0..1..2..0..0....0..0..0..0..2 ..0..0..0..2..2....1..0..2..2..1....1..0..0..2..2....0..0..2..1..1 ..1..2..1..0..0....1..2..1..1..2....2..2..2..1..2....2..1..2..1..2 CROSSREFS Column 1 is A235417 Sequence in context: A236604 A236698 A235421 * A235417 A237391 A237385 Adjacent sequences:  A236279 A236280 A236281 * A236283 A236284 A236285 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Jan 21 2014 STATUS approved

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Last modified January 19 20:41 EST 2020. Contains 331066 sequences. (Running on oeis4.)