Coefficients in the series (1 + 2x^2 + 3x^3 + 5x^5 + 7x^7 + 11x^11 + 13x^13 + ... )/(1 - x - 4x^4 - 6x^6 - 8x^8 - 9x^9 - 10x^10 - 12x^12 - 14x^14 - ... ).

A058356

Coefficients in the series (1 + 2x^2 + 3x^3 + 5x^5 + 7x^7 + 11x^11 + 13x^13 + ... )/(1 - x - 4x^4 - 6x^6 - 8x^8 - 9x^9 - 10x^10 - 12x^12 - 14x^14 - ... ).

Terms

    a(0) =1a(1) =1a(2) =3a(3) =6a(4) =10a(5) =19a(6) =37a(7) =74a(8) =140a(9) =269a(10) =520a(11) =1026a(12) =1984a(13) =3831a(14) =7368a(15) =14302a(16) =27707a(17) =53729a(18) =103826a(19) =201035a(20) =389094a(21) =753858a(22) =1458852a(23) =2824336a(24) =5466167a(25) =10584567a(26) =20489682a(27) =39669401a(28) =76787404a(29) =148660956

External references