A000627 Number of non-stereoisomeric paraffins with n carbon atoms.

1, 1, 1, 2, 3, 5, 7, 13, 20, 35, 55, 96, 156, 267, 438, 747, 1239, 2099, 3498, 5912, 9890, 16677, 27951, 47084, 79019, 133003, 223373, 375824, 631477, 1062160, 1785159, 3002227, 5046641, 8486453, 14266795, 23989770, 40332184, 67816640, 114018876, 191713441, 322330987, 541966582

Offset: 1

Author

N. J. A. Sloane

Keywords

• nonn

References

• N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
• N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Links

• C. M. Blair and H. R. Henze, The number of stereoisomeric and non-stereoisomeric paraffin hydrocarbons, J. Amer. Chem. Soc., 54 (4) (1932), 1538-1545.
• C. M. Blair and H. R. Henze, The number of stereoisomeric and non-stereoisomeric paraffin hydrocarbons, J. Amer. Chem. Soc., 54 (4) (1932), 1538-1545. (Annotated scanned copy)

Crossrefs

Cf. A000626, A000628.

Formula

Reference gives recurrence.

Extensions

Corrected and extended by Tom Zeller (tzellera(AT)aim.com), Jun 01 2006