A056621 a(n) is the total radius of gyration of all self-avoiding polygons of length 2n on the square lattice.

8, 66, 600, 5164, 42872, 346828, 2754056, 21549780, 166626744, 1275865332, 9690096824, 73090383120, 548064459968, 4088719617824, 30367415294800, 224659143155964, 1656259765448200, 12172580326973688

Offset

2,1

Links

I. Jensen, Table of n, a(n) for n = 2..50 (from link below)

Sean A. Irvine, Java program (github)

I. Jensen, More terms

Crossrefs

Cf. A002931.

Sequence in context: A147959 A197355 A121777 * A152275 A083385 A275230

Adjacent sequences: A056618 A056619 A056620 * A056622 A056623 A056624

Keyword

nonn

Author

N. J. A. Sloane, Aug 30 2000

Extensions

Title clarified by Sean A. Irvine, Apr 25 2022

Status

approved