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A076872 a(n) = number of numbers <= n that are the sum of two squarefull numbers. 1
0, 1, 1, 1, 2, 2, 2, 3, 4, 5, 5, 6, 7, 7, 7, 8, 9, 10, 10, 11, 11, 11, 11, 12, 13, 14, 14, 15, 16, 16, 17, 18, 19, 20, 21, 22, 23, 23, 23, 24, 25, 25, 26, 27, 28, 28, 28, 29, 29, 30, 30, 31, 32, 33, 33, 33, 34, 35, 36, 36, 37, 37, 38, 39, 40, 40, 40, 41, 41, 41, 41, 42, 43, 44, 44 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

REFERENCES

A. Ivic, The Riemann Zeta-Function, Wiley, NY, 1985, see p. 439.

LINKS

Table of n, a(n) for n=1..75.

CROSSREFS

Cf. A001694, A076871.

Sequence in context: A230413 A029096 A194820 * A008906 A029074 A258741

Adjacent sequences:  A076869 A076870 A076871 * A076873 A076874 A076875

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane, Nov 25, 2002

EXTENSIONS

More terms from Vladeta Jovovic, Nov 26 2002

STATUS

approved

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Last modified June 27 11:25 EDT 2017. Contains 288788 sequences.