login
A159219
Number of n X n arrays of squares of integers with every 2X2 subblock summing to 18
0
30, 78, 166, 342, 678, 1350, 2662, 5286, 10470, 20838, 41446, 82662, 164838, 329190, 657382, 1313766, 2625510, 5248998, 10493926, 20983782, 41959398, 83910630, 167804902, 335593446, 671154150, 1342275558
OFFSET
2,1
CROSSREFS
Sequence in context: A039517 A185479 A045560 * A098998 A044168 A044549
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 06 2009
STATUS
approved