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A049454 1+Sum_{i=1..n} phi(i)^2. 0
1, 2, 3, 7, 11, 27, 31, 67, 83, 119, 135, 235, 251, 395, 431, 495, 559, 815, 851, 1175, 1239, 1383, 1483, 1967, 2031, 2431, 2575, 2899, 3043, 3827, 3891, 4791, 5047, 5447, 5703, 6279, 6423, 7719, 8043, 8619, 8875, 10475, 10619, 12383 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..43.

CROSSREFS

Cf. A005728.

Sequence in context: A116406 A112843 A036651 * A095055 A305750 A107857

Adjacent sequences:  A049451 A049452 A049453 * A049455 A049456 A049457

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified December 9 09:33 EST 2019. Contains 329877 sequences. (Running on oeis4.)