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A008845 n+1 and n/2+1 are squares. 0
0, 48, 1680, 57120, 1940448, 65918160, 2239277040, 76069501248, 2584123765440, 87784138523760, 2982076586042448, 101302819786919520, 3441313796169221280, 116903366249966604048, 3971273138702695316400 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

REFERENCES

A. H. Beiler, Recreations in the Theory of Numbers, Dover, NY, 1964, p. 256.

FORMULA

Equals A008844 - 1.

EXAMPLE

48+1=49=7^2 and 48/2+1=24+1=25=5^2.

CROSSREFS

Sequence in context: A062195 A004386 A076003 * A152068 A165043 A049678

Adjacent sequences:  A008842 A008843 A008844 * A008846 A008847 A008848

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 17 00:09 EST 2012. Contains 205978 sequences.