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A130421 Numbers n such that 4^n == 2 (mod n). 1
1, 2, 14, 1022, 20066, 80519, 107663, 485918, 1284113, 1510313, 2531678, 3677198, 3933023, 4557713, 8277458, 8893262, 21122318, 24849833, 26358638, 39852014, 42448478, 71871113, 76712318, 80646143, 98058097, 104832833, 106694033 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Cf. A130422.

Sequence in context: A144017 A032419 A190634 * A156736 A006266 A106484

Adjacent sequences:  A130418 A130419 A130420 * A130422 A130423 A130424

KEYWORD

nonn

AUTHOR

Jon E. Schoenfield (jonscho(AT)hiwaay.net), May 26 2007

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Last modified February 17 17:51 EST 2012. Contains 206061 sequences.