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A123281 Leading diagonal of A123260. 3
1, 1, 1, 5, 19, 205, 1795, 36317, 636331, 23679901, 805351531, 56294206205, 3735873535339, 502757743028605, 65725984337422795, 17309316971673776957, 4485620580863732681131 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

REFERENCES

R. W. Robinson, Numerical implementation of graph counting algorithms, AGRC Grant, Math. Dept., Univ. Newcastle, Australia, 1977.

LINKS

R. W. Robinson, Table of n, a(n) for n = 1..30

CROSSREFS

Sequence in context: A024529 A106991 A102262 * A135171 A058765 A317340

Adjacent sequences:  A123278 A123279 A123280 * A123282 A123283 A123284

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Nov 12 2006

STATUS

approved

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Last modified September 17 09:00 EDT 2021. Contains 347478 sequences. (Running on oeis4.)