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A159217 1/8 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 17 0
3, 8, 17, 35, 69, 137, 269, 533, 1053, 2093, 4157, 8285, 16509, 32957, 65789, 131453, 262653, 525053, 1049597, 2098685, 4196349, 8391677, 16781309, 33560573, 67117053, 134230013, 268451837 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

COMMENTS

Same series for 1/4 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 5

Same series for 1/4 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 6

Same series for 1/4 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 11

Same series for 1/4 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 15

Same series for 1/8 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 22

Same series for 1/4 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 23

Same series for 1/4 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 24

LINKS

Table of n, a(n) for n=2..28.

CROSSREFS

Sequence in context: A327608 A239844 A182616 * A052996 A112523 A147419

Adjacent sequences:  A159214 A159215 A159216 * A159218 A159219 A159220

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 06 2009

STATUS

approved

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Last modified June 5 12:47 EDT 2020. Contains 334840 sequences. (Running on oeis4.)