A159217 1/8 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 17

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

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 A369734

Adjacent sequences: A159214 A159215 A159216 * A159218 A159219 A159220

Keyword

nonn

Author

R. H. Hardin Apr 06 2009

Status

approved